llvm-6502/test/CodeGen/AArch64/tailcall-fastisel.ll

; RUN: llc < %s -mtriple=arm64-apple-darwin -O0 | FileCheck %s

; CHECK: b _foo0

define i32 @foo1() {
entry:
  %call = tail call i32 @foo0()
  ret i32 %call
}

declare i32 @foo0()
[AArch64, fast-isel] Fall back to SelectionDAG to select tail calls. Certain functions such as objc_autoreleaseReturnValue have to be called as tail-calls even at -O0. Since normal fast-isel doesn't emit calls as tail calls, we have to fall back to SelectionDAG to select calls that are marked as tail. <rdar://problem/17991614> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215600 91177308-0d34-0410-b5e6-96231b3b80d8 2014-08-13 23:23:58 +00:00			`; RUN: llc < %s -mtriple=arm64-apple-darwin -O0 \| FileCheck %s`

			`; CHECK: b _foo0`

			`define i32 @foo1() {`
			`entry:`
			`%call = tail call i32 @foo0()`
			`ret i32 %call`
			`}`

			`declare i32 @foo0()`